Amd ohe-teied  so albert balb



"PARATUS AND PROCESS OF STEBILIZING FLOWING WATER Original Fi y 1916 5Sheets-Sheet 1 lNVENTOR 73 gg 3 7 4 q 7m ATTORNEY$.

April 23,1929. 6. G. EARL 1,710,301

APPARATUS AND PROCESS OF STERILIZING FLOWING WATER on muil u y 8. 1916 5Sheets-Sheet 2 INVENTOR BY m W4 71 1 a, ATTORNEYS.

April 23, 1929. G EA 1,710,301

APPARATUS AND PROCESS OF STERILIZING FLOWING WATER Original Filed ly1916 3 Sheets-Sheet 3 Patented -Apr. 23, 1929.

UNITED- STATES GEORGE GOODELL EAR-L, OF NEW CrRLE-AN czLm-Lns Ala-THURzaown F nonnm, OHIO, All! LOUISIAI'IEM VIN WOOD, OF NEW ORILEAHS,

s, Lottie;

'2 om:-- Tm.,. To ALBERT BALD- APPARATUS AND-PROCESS or rnowzs WATEROriginal application filed July 8, 1816. Serial No.

Divirlcd and this applica'ition filed August a, 1924. Serial m1. 721.092.

.---'l"x-' im'en'ion relates to apparat us for and vi e-SS 'f watersieriliz-atiun and par- 10 the process which permits a flow water to besterilized by the amount of u stergulnted as a ujuunil'lgled withisizeal in the most The comniron practice in Water sterilizetion. has.heen by the preparation Of-a solution in a ven or open contains-1', ofch10- s or 01 mzne s11: lance giving off or (:m chlorine gus, :zndthe'addition of .5 1h: HOli' lZ-lQFI to the wafer to he treated;

til

objectionable Mars and great my sesul Ling; when large quan- :lutimrwere made up the nextstep 1'0 make up this solution con- 1 ding;chlorine gas to u minor DfiSSlZ'lQf 1 h ese flows through utorcontaining p0r0us'1na-' mriul, whirl] pr-rmllf'ied any uudissnlvedchlor: 1 my enus p1'nduets. of vthe solution of l e in Water k0 to thealmos- Mure. lull. sim'ed so small an amount of the nlui'iu so short atime. that at least a; relai'lVOl) h and constant strength sdlutionnuxuyrhed e a-(201." 1'0 but oetedh0w ever. l weld-11mlwhich wasomnhhl'ed and 16mm which. any gaseousproducts iui sin' "from thecompleted solution or any um rod 9: 1 ha? 'esca-nnd to 'msphere throughthe 'v flied Saturn tor; crezrthxgxobjecr-innnhla ndors' and to a large.deg: decreas- 'lll lhe cl'lleieney of sterilization from '2; givenamount of'gus. x

The process of sterilize-$5611 by the action of um-i110. would be itits. maximum of ef'fivi-s: i'i flu! uhlm'lne lfufi so :lu'trii'udrflthrough the whole body of Wa ter t he .erih'zed that all of the productsof ifs solution at the instant of their formation r 121 .0 mfininf-brute c-oniact'with the Water in he ran The dissemination(ifchl'qrine gas lPh') water to he treated, 5 a. has not 1109:"- founda, satisfactory "or 'rrra ctinahle umil nd, l .-.='1r.'ever, because 'of'the difficulty .plel e dhl-ribution and solutiim byflthis c hod.

rm rev-ed system fnr water stemliz -7:; I 0 v1 h. wine-h may he sehafiany desired rate, or autothrouglnthe waterbe treat-ed T as; 932s couldhe such. a. wayna-itn be 4 11. p [wrtmn-u 130 rue mam flow 04" wuter tohe sterlhzed, and, gown vdhx said snmll K I v I I I I now of uuier,.l-adc therein 1p prqpurt-lonal any desired. prepari lontlu ugh anu'nventexceptthreu'gh the discharge conduit-there" for and int aisles ofg; ueradl'nlt-lod' cl1i'cctly to, and distribute it in 1 he treated IOne ohje'c'tnf 1y invention is to prkwi'd the zn'osi'.efilcienf-,uti'lizzrtien 01". 1e (rhlorinegas for ste;iliz2,ti'0n.

Another bjeehof my invont-ion'fis to pro-- reni the objection ehfntljinjm'ions, results of escapin flchlo in .qgus or prqductsof solu-'tion of chlorine g rmn Open tanks oriVehtilated systems, frnui\vlli'elrmulli'gasesmay escape. I Anether nhjoefir) n v inventioil is topro- Anotherchject m'? 1"n y invention q'l tqprovsde means whereby theregular-1011 of the gas flow. a, .defimte re;. .1lat1i)n- 1n pounds of9315 been use its; flow regnlntim'l operates at a eonto be regular-ado!)stunt PIQQGLEPGIO'E the one side 01": thelorificeo which sfuirh regl uluA Other .Ohjects 61' my vention itself descri r. restriction through 5.efiec-ted'. V c'nljmn and the m Ce he had to drawings illus- -i of myinvention.

the drawings f one embdimel lt f my'inveutratmg the Fig. 2 shows anothereznhbdnnenbcff my in Flu. 3 shows-a eonlhinhiibil off 'Jarttaken v andr116 sznall'fiow of water can will heeenfienpparent as the IUD may beregulated to withccr tain parts a conventional torni oi restrictionadapted .to be substituted tor-a rcin the'other figures.

striction as .illustrated Referring to 1-A, flow. of water. which anydesiredrate of flow or made proportional-to the newslettersbetreatcdenters thesystein at l an d may;be -.recorde d the approach12't0 the restriction l3 and creates {a difierenee-between the pressureat such approach and such rcstricti onn whieh is by a meter 60, andpasses through proportional to the square of the ainountof waterpassing.I 12 is communicated by the-pipe 58 to the under side of the diaphragm4- Which is shown as being horizontal and inay. 'be level wit: therestriction l3 and also to the right hand side of-the diaphragm 11.

The function of pipe 27 is waterwhich may accumulate in chamber Z abovethe-levcl26,,which is justabo've the level 6 which in this case is theconstant pressure dominating both the water pressure at the approach 12to the restriction and the y a- ,provision to 'prevent any materialexcess" chlorine orificeB. The overflow to vaste is over the pressuredne.to 'the'level 6, as-in the event of the closure of valve '16.The'gpurpose of thev trap in'ivhic-h the'valve 16 isplaced, is to-a voidany possible Venting or escape ot chlorine or the gaseous products ofits solution to atmoshercfv v The diaph'izwni 4: operates to openandclose the valve 5 and thereby tor-maintain apressure of chlorine gasover diaphra'mn emu-1 acting upon the approachside o" chlorine" orifice'3 equalt'o the waterpressure at the ap'prbzichlfl above-the levelof-thediaphrag n ner shown in F igthisis also the level. of therestriction 13 and these conditions result'in a floivof gasthroughthe-orifice 3 proportionalto the flow of water i through therestrictiQn'lB; since the orifice 3 or the restriction 13, see Fig. 4r,v

may be adjustable, the proportion of to water nay also beadjustable.lieferring to Fig. 4, the orifice 13 of Figu-las well as the orifices35. and 35 o t Figs. was, respectively, may lie inade adjustablein themflnig. tor in any othcr'welh known way. In Fig t, theiorifice is shownat 35? in a conduit having an approachpor- Thepressure at theapproach towaste any .acts on the left handsidcot that chlorine pressure on theapproach side'otthe o'r'depression inthe pipe 15,

,tion 3t, these corresponding to the orifice and conduit approach and340i Fig 2 and the corresponding elements-rot the other figuresf At71,Fig. l, I show an adjustable pointed rod having a linur-led handle72'. in serLable into the conduit with the pointed portionprojecting--a2iially; of and into the orifice and adapted to'be'reciprocatcd'- to a greater or less dcgrcethcrcin'by virtue of :Jand itcan therefore .Work ivith great accu- I.

racy in producing a chlorine vpressure over diaphragm l'eq'ual'tothe'wvater pressure under said diaphragm. The proportionalmixture of chlorine and water entering the chamber 14 in this embodimentis met by a counter fl'ow of water d'ue t0 aconstant pressure .oi watermith constant level 6. n'iaintained by the float 8 admitting additionalwater from the sourceol Water supply 10 through the valve 9 actuated bythe lloat S; \\-'henever the level 6 isglowered due to'n'ater leavingthe container 7 byway of the duct 15,

the valve 9 is'reopened to ,nlfilTlt additional \vaterfitonr the source10, under pressure, and throi'lghthe orifice 25, to restore the level inthe container and raise the float 8 to close the valve'9 This constantpressure due to level Galso 7 l L 11 and through-the action o'l'thevalve sure 51 through thczori-fice 52-, thereby o1 ating thevalve 1-9governing the how the chamber 21 vthrough the discharge conat-the apsuch as to at all times containwater under a pressure valuegreat-ert-han the value due to the level of the water in the container 7and also the source of gas '2 will'co'nt-ain' chlorine gas under ahigher pressure than any pressure which may at any time be exerted bythe Water eontained'in the chamber under the diaphragm 4. The aboveshould be true in both cases; and that afterthese pressures from thesesourcesarecut'down by the autoinati'cally'oper'atinp; regulating valves9 and 5, respectively side thereof, although redie fluids passing thesevalves on the disch arge H duccd in pressure-by the action ofthevalvesoperated by-the diaphragm ll --pe'r1nits. or I cuts ofi low fromthe-source of: water presand theorificea'a're still'of .a -,pressure asgrcatiasthat required bythedemands of -the The water pressuceunderdiaphragn'i t is stant prexsure approin-h .221. mlitl thereforenmintaineil constant, and 2hr gas pressure over said diaphragm ismaintained equal to said constant Water pressure, and this equality ofronstani jjzlh and water pix) sure may be made at the lrvol at whirl}tho gas and water flow nnittg 2hr will water prrssnrc at this rut! t onl3 and said gas prrssnrv on tiir :liwh Igr st l the orilicr 3 being prporti-nml to tilt sownof the amounts of gas 21ml \Yailt! ,nzifiing aietorifit'v and mid rwtrit'tion, no have proportional flows by a rognlationtwat upon it con- 01' ometing point of gas and Water which alone n:produce (lQll nits regulation of pounds ot' ms PX'OPOF Home? to (valorflow. tlu: ro nt-iwnl lawns at chlorine gas and water entwing thrconduit- 1 and 13 and 12. respectively paw; through the chambers it and:21 into :i tlisntmrgro com tluit and. then past, thett-tlnlllillltlll)" no justnble vulva It) to th nmin hotly o1" 'nnlt'lto be sterilized.

lg, 2 shows another pretnrrrd form of my im'ent'ion. A flow of Water setat an desired rate or nnide proportional to thr flow i i i t to systemat 36 may he metered at. M and passes tlm ttlstl'lttion 353, thandownward through the rlminbe-rh 5H :zm 32 eseaping through the pipe andthe valve 3'1 until the water entering at 36 him tillrtl the system to apoint which lifts the limit The valve 31 is otherwise adapted to her-lbsetl by the Weight of said float; thw'ra twr the float operates thevalve 31 to miiintuin the conotztnt pressure due to water lvwl 2%) onthe pipe 34 :tpproacliing the IflSlLltjllOIl 55. The float 37 operatingthe \Elltfi rots oil any chlorine mpply from thc nrco of rhlo- Tinesupply 41) to tho :1 rm ohm 1 mid tlnnt mt til tho water lm'vl nronmtszzitl tlottt rises: t the level of thr restriction ;55; any fin-film-:1 ronntl the flow 3'? mini J rise of water It 01 tflilfll'lfw throughthe mlw- 238 to ioninmm prnssurc in the arm nhow the float vqnat to theWatt-r prrssnrt sustaining raizl .tloni tlir mtion of :r. romtnnt lm'rlHost or of; n liori zontal diaphragm Purl: at tlne level or, n wstrirtion lJP-llltf 1hr mm? :nnl l ning l' lllll lfilll lti tl ofmaintaining rqnztl prw-roo' f a g and of :1 liquid opposm to oz :iwother at said lm'vl. tlltl tlwrt-t'orio3, runs: int: nithm' llnflow orlllt' li gnirl low iiiroitr iing :t junvlioo :xt m t'e trirtiozi tonmintnin will flown prop rtional to om) 2H1- other.

In Fig. 3 :2 vonr rmt prrsmrn of JHlt'! lllt: to the lrw l 2. ar upontho nmtriution 3 owl is fiiirriz'ig zt vino flow through 5, i w tion anrrnrzo', pressure of gun mt [ra 2" llK lr' t-l of ti? innw on of tingm{Hill Witt flow i. :nting n; n the ,ipjir avh to tho tlll' tine oritiro219 and the two llama tor :n l i at :1 mnimon lower prwsmr It i I 35.the restrictions being: like that tratctl at 13, Fig. L i

It wt prawn; o of tho chlorine gas Contained in tin more .E HYI the Hunt37 in the containing rl-umlm w ill w sntlioivnt to prevent the \Hitrr mu,mvh tlozit from rising :u' nz l rim tlont Po to aws through 1hrrhlorinv Ul'lilt't': y-Wrinul lo thrllmxt 3R 21ml thence through llupowto rhr 1 lllfit'lllt" .wpply at 41. Thu wrttwot' th Will N1 21ml therxposcd arm of ti t tint? rwii lriwr an area of equal jt.-- t itfi [hrdiaphragm 4 --o li an area. The flows 21H: 1h torn pioyort onnl and thegas flow twin;- olotwl to o -on tnnt prt'. :.ure no ruitt-hingtlnoritirn iii protlmw a propon tional rrmalztti n in p nvrl: of gasimteatl of only in rnbi t't-rt tin" :of :rwould b0 tho Hut I! ll): rnnlutiozi: v z-rc at varying pro on: 'lln: yorti mi of Ft" up: tlnlig-urwz him t?) imllmw whows n UhlllLJtl 1' *rvly any riwirmt amount ofznltlitinnul \i i'wt' How may hi 1ttllt.l 2o t'mrilitm wloiion soul munn-nt :is tollo'tw: [X =-amvr at moor eenppty 4a snppli 1 momma? rvwnrrtho tank ll to may \li-wrwl lt'\tl, .rrgnlntrtl it tho tluzzt 4; owl thot'ialx it ronntimting :1 row Hunt irr i!ro xz'ilt'r. and the pll t' 4';which hm n \ulw l5 to r ngnlntc ilir low tln-mti-om snpplim anyinlilitionnl flow ilwiswl vitlwr to: agitation or ilillllion lt' promotrsolution mnl Marrying;- lorunnl ol 'nzintnrn. Uhvioml tinulninilmr 32may hr ot' an), \izo ll tl "lllli tll l' kl :Illtl tlw illli itlrllotion or l wou d uz' n mml llw :wtrirtion 50 and thorn-0 tloorgh tinwlminlwr J33. tho pipo 1153' am. anla'w H1 to tlii- \Hllt'! t itirrutctl at l.

l tln" llozll w om Mlltl flout :nnl :urount of t'uflltillil prrssnro n-t(ln ilL-rrln-u m I17 1\'lil('lt ix lrwl with 1 :w-trmnon 25. mnl \thiuhoperates the -:il\'u ift 1o nnnntmn an vomit ronstnnt pm vim! diaphragmand too raping through the pipe 33' which are Visible in the largehottle 32 and are descending an escaping; into pipe 2-3 but when Idischarge this mixture oi water and gas bubbles into a large body offlowing water to be sterilized at t) and well below its surf-are. themixture roanuin his with the flowing water and enters rapidly into itsreactions therewith which are eomplet ed therein without any sign orodor of esrapingchlorine gas over said water surface at 0, whereas lhave found that any venting of the mixture being discharged at wouldgive ofi chlorine fumes and. fumes resulting from the solution ofchlorine one-urring; in the water which are objectionable, beinginjurious to metallic structures, and urstitute a most wasteful escapeoi? the elements which are. effective in sterilization.

Fig. shows also a system by which I have produced a proportionai ilow tothe main flow to be sterilized usiiiigethe equal pressure diaphragmitlt) to maintain a pressure on the discharge side of oi iiice ltllequal to the pressure in the restrietion ltllS ot thapproach-throat-reeoyery eouihination lHL--lO3-lt)l, and therehyproduriiq through the oriliees 101 which l piped to 3b" which isproportional to the. main flow from the pumping station. tlltit whiehautomati- (rally reeeives at 35, a proortional suiply of gas. andreturns to the suction well ol the pump or pumping station; giringtherefore a dosing of gas to the water ca ing pumped \rhirh variesaccurately and instantly proportional thereto.

it will be understood that although the conduits 1 and 22 ot Fig. l. 3t)and 3 of Fig. l, thy-and 33 of Fig. 3 and are and of Fig. 4. may betahvii 21:; the main ronduits. inlet and diseharge oi awaier system,that preferably the arrangement now shown in the figures. exclusive, ofFig. 3, may be like that illustrated in Fig. 3, where the main body ofwater to be treated in a conduit or reservoir 0 and the inlet anddiseharge eondnlts above enumerated will correspond to those illustratedat 36 and 31") of Fig. 3 and merely convey a minor flow ot' 'ater,together with chlorine gas. to the larger body of water shown at O to betreated. and in which ease a ronduit ltlil ltli may lead from such areservoir to the water consuming points of the v ystem. Preferably thearrangement \ill be a-= show n in Fig. 3. 1n sperial cases it may l eotherwise. llotli arrangements are contemplatei l liel'riii.

I may have many diaphraguis lOtl drawing ilow irom man pumps and all ofthem dis charging: into ens common pipe line 36. It will he under toodthat the --it)tittt of water supply ll l"\ lt at il :)l i h ll) and atother points in the 'llllQl'tLl ii i drawing are from water underpre;-x-*:re to l e d awn from a source oi wate'. a; fw' i my ducts tothe -ay-.teio at Eton, ma

these sourres may be separate or the water may be dra in from the samesource, it 0111 y being necessary that in any case the water pressuresbe suflieient to supply the water flows described and as governed in theoperation of my system. I may use oritiees or other forms of dischargingmembers with equal PIQSSHX'Q diaphragins to produce my proportionalflows, or t may use other methods of producing proportional flows at 36,or 1 may set any desired rate of flow thereat, in Various known ways, orgovern the flow approaching it in many ditlerent desired ways, as forsuch a purpose 1 can use means already described in my prior patents.and applications previously filed by me; I have not, therefore, repeatedthe many ways of governing functional or proportional or set rate flowsapplicable to dominate the rate of How at. 56 and ehown either inanycoending: application, ifierial No. 108.171. tiled July 8, 1916, ofwhich this ease is a division, or in my other prior patented cases, orrending: applications in whieh 1. have covered such methods oritppttlililti tor the government. of tluid how, or in the prior art,patented, pubished, or in actual use. Some of these metln eds aredescribed in my iO-l tl'it'lillg application. Serial No. emote, and indivisions thereot. In Fig. 3, i show one arrangement taking care of whatI consider to he the most ditiieult of all such gowrnnients, viz--anautomatic proportional {low oi gas, in pounds of gas, to a small flow oiwater which is itself proportional to a large tlow oi water to besterilized.

Having now desrribed my invention in a preferred embodiment, and inseveral modified forms thereof. I a n: aware that nun'ierous andextensive departures may be made from the embodiments herein illustratedand described. but without departing from the spirit. of my invention.

1 claim 1. lo. a gas and liquid contact system. the

process whit-h eoii'iprises estalilishinu' a minor flow of wat r sparate from a main ilow. intlueing a proportional tlow of a gas enertinga re sure in exro s of atmospheric pressure. uniting: the saidproportional gas flow with such minor How in a portion of its path. andcausing the said uinor line to convey out; oi contact with air. all ofsuch gas partly in solution and partly in the form oi gran hobbies tothe main body of flowing water. i

In a gas and liquid contact system, the process which commie-eaestablishing ftltlllltll. tiow of water separate from a inainjlow. ininducing a separate liow of a gas exerting: a pressure in i-ziress ofatmospheric pressure. pr portional to the -tlltl minor tl n hiding 'ingthe said flow oi" pee. and the .l i'uin r 'vsater iiow together.iaintainii; the, cone hined flow; out. oi eon "at with. air and th nadding same to the main loodyof water.

inducing-a separate flow ot' a 3. In a gas and liquid contact system,the

process which comprises establishing a minor ow of water separate from amain flow, in

as exerting a pressure in excess of atmospheric pressure proportional tothe said minor flow, in bringing the said flow of gas and the said minorwater flow together at a point of constant pressure to cause a physicalmixture of the said gas with the said minor water flow and in'thenconveying the said mechanical mixture to the main body of flowing water,the mixture being substantially entirely conveyed entirely out ofcontact with air.

4..In a as and liquid contact system, the

rocess whlch comprises establishing a minor ow of water separate from amain flow, in establishing a flow of a gas exerting a pres sure inexcess of atmospheric pressure and maintaining the flow of gas and theminor flow of water at a given predetermined constant pressure, unitingsaid flows at constant pressure and conveyin the gas in the said minorflow from the point where the flows are united to the main body offlowing water substantially entirely out of contact with air at allpoints in its path to the main body of owing water.

5. In a as and liquid contact system, first, the establishment of aminor flow of water separate from a main flow, second, in inducing aflow of a gas exerting a pressure in excess of atmospheric pressure, andphysically uniting the gas flow and theniinor water flow, and conveyinga considerable portion of the gas undissolved to the mainbody of flowingwater.

uid contact system, first, the establishment 0 a minor flow of waterseparate from a main flow, second, in inducing a flow of a gas exertinga ressure in excess of atmospheric pressure, t en physically uniting thegas flow and the minor water flow, and conveying a considerable portionof the gas undissolved to the main body of flowing water out of contactwith air to prevent loss or exposure to air of any of the gas and theproducts of solution prior to the introduction of the mixture to themain body of flowing water.

7. In a gas and li uid control system, the process which comprisesestablishing a minor ow of water separate from and proportional to amain flow of water, inducing a flow of s pro ortional to the waterflows, uniting t e sai proportional gas flow with such minor flow at apoint of common pressure above atmos heric pressure in a portion of itspath, an causin the said minor flow to convey the gas part1? in solutionand partly in the form of bubbles to the main body of gas and li flowingwater out of contact with air so as to prevent the escape of any of the"as, and prevent exposure of the products of partial solution to theair.

8 In a gas and liquid contact system, a conduit for conducting a mainflow of water, a source of gas at more than atmospheric pressure, aseparate minor flow of water, means operable to mix said gas with minorflow of water in amounts proportional to the amount of water passing inthe said minor flow, and air tight conduit means to carry said mixtureentirely to, and. disseminate it through, the water to be treated, saidconduit means comprising a downward passageway with an outlet for flow,said passageway being of such area and shape whereby bubbles of the gasor of gaseous products of solution of said gas passed through it are sobroken up by the downward flow of combined water and gas passing throughthe passageway that only bubbles of small size pass through the outletof said passageway.

9. In a water sup ly system, a body of water adapted to be scharged towater consuming points thereof, means to produce a mechanical mixture ofsmall bubbles of a gas with a'small flow of water, said mixture beingmaintained at greater than atmospheric pressure, and unvented means toconvey said mixture out or" contact with air to, and to disseminate itthrough, the water to be treated.

10. In a liquid gas contact system, a main body of supply water, meansto govern the rate of flow of a small flow of water, a source of gassupply under pressure, means to bring the pressure of said small waterflow to a constant pressure at one point in its path, a valve, a movablemember, means to govern the pressure of gas supplied from said source tomaintain it at a constant pressure equal to the said water flow constantpressure at one point in its path by opposing said gas pressure againstsaid constant water pressure, said movable member being responsive tovariations in relative values of said opposed pressures at the point ofopposition, to operate said valve, said valve being disposed in the gasline to control the flow therein, means to unite said flows at a commonpoint of lower pressure, and air-tight means to carry the mixture of gasand water and all products of solution of said gas in water to the mainbody of water at which the mixture of gas and water is introduced, saidgas and Water and the mixture of gas and water being maintained at allpoints prior to introduction to the main body of water to be treated ata pressure in excess of atmospheric pressure.

11. In a system for the mixing of a gas flow in any desired proportionwith a water flow, means including an equal pressure member and a valveoperated thereby to maintain a constant pressure of water at one pointapproaching a pressure reducing restriction in said Water flow, and anopening from' a conduit supply gas entering said water flow at a pointin its path after its pressure has been reduced by the effect of therestrictions, said restriction in mid water flnw, an vqual prwsuremember in a horizontal n ition adapted to be affected by relative n1tiuns of 21 gm; pressure and a water pm n r m-ting againsi oneaiii'itlwi' at #329 bit. Ml: said npcning a vnh'v mnir -lied b J m:'vz'swziw of said Diem-- bar in t 51:? m ii ntriis'iing a, (5011- 1constant mid int i tiow (1%, f the (rid " lliili i" 'Ll b lw im im beingin my 1;; In A gas and li ii (1 umber carrying W-Av tn s'ipply asnpzuwitv r mes-11 In control ilu gm Lhey' havv guy? ,fi ilI'fShlCllOhti and 3218+ ing a niwrhmi c: i blu earning w m mili )fwniaci tlnm gh a system aml t!) mlmmgcnce in the 1 i Eur? i :1 liquidtinw h be; ti'i-zitad thereby was in i'vgulnlnu! a mmll liquidilosin'aal rule, in bringing szurl miss-tum ip 0 3:1

135 The m-aflmd 0f dispersing fl pm mg mid minsizmt gross um of liquidm;

" a gas flow tween the restrictions.

tion, and from said constant and equal pressures of gas and liquiddrawing flows of gas through one restriction and liquid through anotherrestriction and uniting said flows a mixture comprising gas proportionalto the small liquid flow through arying rates of said small liquid flow,and then in 'ronducting the mixture thus formed at a bubble carryingvelocity through a system and out of contact with air to submergence inthe liquid flow to be treated. v

20. The method of dispersing a gas timv through a liquid flow to betreated thereby l varying proportionally to the amount of liquid flow tobe treated. which consists in pmviding a small flow of liquidproportional to the flow to be treated, adding thereto a proportionaltlovx of gas, and (ruminating the mixture thus Formed at a bubblecarrying velocity to subinergenee in the liquid flow to be treated.

21. The method of governing: a gas flow in pounds of gas which consistsin governing a water flow, bringing said gas tlow and said water flow atone point in their paths to a common constant pressure measured from atixed elevation. by opposing said gas pre sure against said liquidpressure at said fixed elevation and controlling the gaseous one ofsaid'flows by dill'erences in the opposed pie sures to preventsubstantial variations he tuo opposed pressures at the point of fixedelevation, of dra\vin a combined flow otgas and liquid from said pointof common constant pressur through restrictions am! unitin; said flowsat a level equal to said tixal elevation al'ter they have pa sed said[22. In a system adapted flow by a water flow for the tons, a constantlevel lloat fo regulate a gar admixture ol'suid. valve to maintain aconstant level of water at one point in said water flow by regulation bysaid valve of said water flow,- another constant level float valveestablishing another constant level of water by the regdlation of thelloiv ot gas to create an equal constant pressure of gas opposing saidsecond constant level of water. an means including a restriction throughwhich the gas escapes from said (fUHSttlH. pressure, and anotherrestriction through which the Water flow passes, for the junction ofsaid water and said gas flows, and mu vented means including anauxiliary flow of water added to said mixture to deliver at bubblecarrying velocity said combined fluids to a body of moving water to betreated in said mixture.

23. In a system for the mixing of a gas flow in any desired'proportionwith a Water flow, means including a constant level float member and avalve operated thereby to maintain a constant pressure of water at onepoint approaching a pressure reducing, restriction in said water flow,and an opening: from a conduit .su 'iplymg gas entering said water flowat a point 111 its path after its pressure has been reduced b Y theeffect of the restriction, said restriction in said Water flow, aconstant level float member adapt d to be att'ected b v relativevariations of a gas pressure and a water pressure reacting against oneanother at the level of said opening. a valve controlled by movements ofsaid member in the gas supply line. maintaining a constant pressure ofgas equal to the constant pressure of water maintained by said lirstnamed member. and reacting against said water pressure at the level ofsaid opening an adjustable orilice in a conduit connecting said constantgas pressure to said opening.

In testimony whereof Ihereunto allix Ill signature this 29th day ofJuly, 1924.

GEORGE UUODELL EARL.

